this is "world news." tonight, bold rescue. the gun fight that ended the hostage crisis. saving that 5-year-old boy held in the bunker. new details on the secret commando operation and how they got in the door. lethal power. the documents hitting the headlines. how the administration justifies killing terror suspects, even if they are american. real answers. when you're fighting against colds and flu, which hand sanitizers really work best? and are they better than soap? dr. richard besser with the test and the answers. and talk about lucky. meet the couple who won $1 million lottery ticket and then, on the way home, belt and won again.

good evening. as we come on the air, new details are streaming in about the daring secret operation that freed a little boy, locked in a bunker for seven long days. how did they free him? well, tonight, we are hearing reports of a gun fight, as they moved in to save a child. abc's gio benitez following it all for us. >> reporter: the little boy at the center of a week-long hostage standoff is in his mother's arm, and tonight, the fbi's bold plan to rescue him coming into sharp focus. negotiators convinced jimmy lee dykes to approach the bunker door to accept delivery of an item. there, fbi agents set off an explosive device. law enforcement officers say dykes fired on the agents. back. moments later, dykes was dead and ethan was safe. the fbi and highly specialized

s.w.a.t. teams spent seven days planning the raid, while hostage negotiators tried to keep dykes talking. we boarded a hall continuer here in southern alabama to get our first look at dykes' underground bunker site. you can see a number of small structures on this plot of land. but what dykes didn't know, just across the street, the fbi had recently built this mock bunker to train agents for different scenarios. >> you can practice breaching the door. you can practice how to get a camera inside. and ultimately design how you're going to assault this bunker. >> reporter: as authorities swarmed the ground above, hostage negotiators remained in contact with dykes, speaking through a ventilation pipe. authorities were able to sneak a small camera inside the six by eight foot bunker to monitor dykes' movements. then, when authorities saw dykes becoming increasingliage talted and holding a gun, they put their plan into action. now ethan is recuperating from his ordeal.

just moments ago, we received a letter from ethan's mom. she says for the first time in a week, she woke up to a beautiful sight this morning -- her sweet little boy. diane? >> and we love looking at his face and his smile. but gio, let me go back for a moment. the man with a gun, he had a television. he could see what he was reporting. and he had no idea, right out of frame, behind you, commandos preparing for this raid? >> reporter: in fact, they were training right next to the media here. >> all right, well, thank you so much, gio. again, it was an amazing bold strike on their part. thank you. and with our thanks to gee woe, we turn to that secret document, 16 pages long and stirring up so much controversy tonight. it is a kind of handbook for lethal power against terrorists, even if they are american citizens. abc's chief white house correspondent jonathan karl tells us about the news today. >> reporter: by one count, president obama has already used unmanned cia drones to drop

strike more than 300 suspected terrorist targets, even more than his predecessor. but today we learned just how much authority the administration believes it has to kill, without trial or evidence, suspected terrorists, even american citizens. a newly disclosed justice department document says american citizens tied to al qaeda can be killed, if, "an informs, high-level official believes the target poses an imminent threat." but the documents say, it, quote, does not quire the government to have clear evidence. case in point, anwar al awlaki, top al qaeda leader, linked to several terrorist attacks. he was killed in a 2011 drone strike. human rights advocates say the justice department memo goes way too far. and -- >> justifies essentially a claim that the executive branch can be judge, jury and executioner. >> reporter: as soon as he became president, barack obama stopped cia tactics like

waterboarding that he considered torture. but this justifies outright killing of a suspect eed terrorist. how does dropping a bomb on american citizens without any judicial review, any trial, not raise the very human rights questions, or more human rights questions, than something like waterboarding? >> the president understands the gravity of these issues. that is why he is committed to taking very seriously his responsibilities. >> reporter: the white house says that the president's top priority has been to protect the american people in a way consistent with our values. but you can expect that his choice to run the cia if face sharp question s later this wee, and diane, some in congress say they want to impose limits on the min straight's ability to use drone strikes. >> all right, jonathan karl reporting in from the white house. thank you, jon. and a few moments about overseas tonight. president obama announced today he will travel to real. the west bank, and to jordan

this spring. and that will be his first trip there since taking office. and this image out of egypt today. mahmoud ahmadinejad in cairo. the first time in 30 years an iranian leader has been welcomed there. the two countries cut ties after the iranian revolution in 1979. and back here at home, wall street called to a count today. the federal government and 16 states declared a kind of legal war on s&p, the huge ratings agency. they are now accused of helping trigger the biggest financial meltdown in recent times. and abc's senior justice correspondent pierre thomas has that story. >> reporter: rebecca hiramoto and her husband were among the millions of americans devastated when the housing market collapsed in 2008. the value of their home, their prime investment, cratered. >> if i think about it too much, it makes me sick. $500,000 in two years? it's like -- are you kidding me? >> reporter: today, prosecutors accused standard & poor's of

lighting the fuse that helped ignite the housing market and financial meltdown. >> while big banks and lenders built mortgage-backed bonds, it was s&p's faulty ratings that detonated them. >> reporter: for a fee, s&p rates the quality of investments, in essence, giving them a kind of good housekeeping seal of approval. the government claims that s&p kept giving top ratings to investments its own analysts warned were risky. >> s&p executives allegedly ignored these warnings and between 2004 and 2007 concealed facts, made false representations to investors and financial institutions. >> reporter: but today, attorneys for s&p suggested the government was on an unmerited witch hunt. >> the government is claiming there was a fraud, which didn't happen. their predictions were made in good faith. >> reporter: the government is seeking $5 billion in civil damages. but critics are wondering why this is not a criminal case, and why prosecutors are not trying to put s&p executives in jail. pierre thomas, abc news, washington. and up next here, a growing

hazard in the air. it just happened in san francisco. and our abc station there, kgo, caught it on tape. pilots stunned by light aimed at their eyes. abc's senior national correspondent jim avila took to the skies to bring us the story. >> reporter: it starts as a bright narrow beam of green light at ground level. but by the time it gets to the cockpit, this laser explodes into a blinding, bright flash. a genuine hazard for pilots. >> you might think it's fun, but it's extremely dangerous. >> reporter: san francisco news copter trained his camera on two men walking down the sidewalk, capturing their crime on tape. the second time the kgo cop or the was lasered. this time, a red light. >> the guy kept doing it over and over again. >> reporter: police arrested the prankster, now facing $11,000 federal fine. the faa, fbi and local police cracking down after a jump in laser attacks. >> got him. >> reporter: from 300 in 2005 to

nearly 3,500 last year. and january of this year, a record pace of nearly 350 laser sightings. >> we just got lasered up here. >> reporter: this is a jetblue pilot having difficulty approaching jfk in new york. >> can you have medical personnel meet at the gate? the first officer is having vision problems. >> reporter: in glendale, california, we flight with a night police patrol that uses an infrared camera and area tracking devices, arresting 16 laser pointers in the last year and a half. chief pilot steve robertson was attacked himself, suffering two burned corneas. >> you take the vision from a pilot, that aircraft's ability to land is greatly compromising. >> reporter: on the lookout for a light that blinds, rather than illuminates. jim avila, abc news, washington. and now, we want to tell you about a great american athlete who took another tough tumble today.

lindsey vonn, the comeback kid who won the big downhill race in the 2010 olympics, even though she's crashed and had to bounce back so often in her career. well, guess what? tonight, she has to do it again. this is her today, over her skis, crashing down a mountain in austria. watch it again, as we slow it down. she crumples, right there, after the landing, on her right knee and tears two ligaments. she'll need surgery. she was air lifted away. and one more headline out of the sports world tonight. the super bowl. new documents released today showed that even before the big game, superdome officials were so worried about a power outage, they replaced hundreds of thousands of dollars worth of equipment. the investigation of the blackout on sunday continues. and this was the scene in baltimore today. a sea of purple, a hero's welcome for the super bowl champs. and everyone was pumped, except maybe the 8-month-old son of

ravens quarterback joe flacco, who was just kind of taking it in there in his cap. and last night, we told you about that spike in the price of gas, rising 18 cents in one week. well, tonight, another stark fact for drivers. we are spending more and more of our lives sitting in traffic. how much? and can you guess which city is the worst? here's abc's scecilia vega. >> reporter: the sea of brake lights, back-to-back, bumper-to-bumper. a never ending commute hell. that's jim mccauley's daily ritual from new jersey to new york. >> can be really frustrating at times, you know? 45 minutes sitting in traffic, it tests your patience. it really does. >> reporter: we've all done it, sat in our cars, saying, this is such a waste of time. but how much time are we actually wasting? one study did the math. all that traffic means commuters spend an average of 38 hours a year just sitting there.

in that amount of time, you could have taken five vacation days. played nine rounds of golf. watched all three seasons of "downton abbey." >> i play solitaire on my phone. >> reporter: sure, new york and l.a. are bad, but try living in the nation's capital. washington d.c. is home to the worst traffic in the country, where what should be a 30-minute drive takes about three hours. >> there's a longer commute because they're going to drive further to get a higher paying job. so, rather than try to uproot the whole family, you uproot your commute and make it longer. >> reporter: in 2011, commuters wasted more than $800 a year on gas, just to sit in traffic. and that painfully boring ride could be painful for your body, too. studies show a ten-mile or more commute can lead to high blood pressure. 15 miles or more, bigger waistlines. and all that can lead to heart disease, diabetes, even some cancers. >> traffic is no longer something that people are surprised at. they expect it. >> reporter: some advice on how to manage it? stay off the roads on friday,

the busiest commute day of the week. leave for work before the sun comes up. use a gps to find a detour or a back road. and lay off the horn. we're getting there as fast as we can. cecilia vega, abc news, new york. and still ahead on "world news," we're all counting on those hand sanitizers in this flu season. but which ones work the best? and how about soap? we put it all to the test and we have the answers, next. i'm here with daphne oz, a model of healthy habits. so daphene, do you eat activia. i do it's always in my fridge. and you know activia isn't just for minor digestive issues. exactly, it's also important for my overall well being because it helps regulate my digestive system. and when you feel good on the inside, it shows on the outside! whether at work, with friends, on a special night,

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headache, diarrhea, vomiting, and increase in psa. see your doctor, and for a 30-day free trial, go to axiron.com. in this season of flu and so many other germs, we're told again and again that hand sanitizers and soap are the best defense. last year, americans spent more than $170 million on hand sanitizers alone. so, we wondered, what works best? and how do the sanitizers compare in a showdown with soap? well, tonight, our chief medical editor dr. richard besser put them to the test and gets some real answers. >> reporter: clean? as many as 400,000 germs per hand. that's how many bacteria travel with us every day. so, here at the university of maryland food safety lab, six brave grad students and i signed up for a nasty experiment -- voluntarily dousing our hands in a toxic brew of millions of e-coli bacteria. yep, e-coli. good? something a little odd about

rubbing e. coli. to see what would take it off. first up, hand sanitizers. we tested two kinds you'll find at the store. one with 60% alcohol and one so-called natural formula containing no alcohol. the key with hand sanitizers is to use enough of it. your hands should take a full 15 seconds or longer to dry. now let that air dry, okay? then, we pressed our hands onto special incubation plates to grow any remaining bacteria. the results? dramatic. here, those graying spots are the e. coli that grew from unwashed hands. after, using hand sanitizer with 60% alcohol. but the formula without alcohol? just look at how many germs are left behind. so, right now get your hands all wet. alcohol-based hand sanitizers work so much better because alcohol breaks up the bacteria's proteins and kills them. but if you really want to get clean, what's your best bet of all? guess what? it's your old friend -- soap. soap not only does as well on bacteria as the sanitizer, it gets more viruses, too.

surprisingly, studies show regular and anti-bacterial soap are about equally effective. it's how you use it, that's crucial. most of us only spend five seconds at the sink. just look how many germs remain, yuck. go! you have to wash your hands for a full 20 seconds to really get the bugs off. and yes, that's singing happy birthday twice. so, let's review again. hand sanitizers, if you can't get to a sink. look for one with at least 60% alcohol, but washing with soap -- any kind -- is better as long as you wash for long enough. dr. richard besser, abc news, college park, maryland. and coming up here, remember the star of the super bowl ads? well, today, she got her name. find out what it is in our "instant index." [ male announcer ] it's simple physics... a body at rest tends to stay at rest... while a body in motion tends to stay in motion. staying active can actually ease arthritis symptoms. but if you have arthritis,

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and finally tonight, imagine you're lucky enough to win a million dollars in a lottery, and then, just for kicks, you decide to test the odds again. what is it like to win twice? find out with abc's nick watt. >> reporter: i say we crown steve and terri weaver america's luckiest couple. yep, that's not one check from the lottery. that's two. here's what happened. heading to their cabin last weekend, the weavers stopped at the citgo in pangburn and bought some scratch cards. >> and it said one m-i-l and finally it dawned on me that meant $1 million. >> reporter: next day, they went back into town and bought somewhere. it was terri's turn. >> i'd give anything if i had a picture of her face right then. and i said "sure, terri. i won a million dollars yesterday and you're going to try and steal my thunder." >> reporter: not quite, but

terri bagged another 50 grand. the chance of that? one in billions. but rules are there to be broken -- odds are there to be cheated. frano selak survived a train wreck, a plane crash, four horrific car accidents, a bus crash and getting hit by a bus. then, aged 74, bought a lottery ticket and won a million bucks. now the weaver's -- and terri's tried, but failed to spend even a little money. >> i was at the mall yesterday after this and i told steve, i said, you know, there's not really anything that i want right now. >> reporter: and steve, a plumber, doesn't even want a new truck. >> no, i really like the truck i've got. it's six, seven years old. it's just -- it's a good truck and i like it. >> reporter: so, what will they do with the money? >> it's going to be a little -- actually a large nest egg for our retirement. >> reporter: couldn't have happened to a nicer couple. nick watt, abc news, los angeles. >> and as one of our journalistic heroes said once, good night and good luck.

thanks for watching. we're always working for you at abcnews.com. "nightline" later at its new time, 12:35 a.m. eastern. and i will see you right back here again tomorrow night. good night.